Interconnected

I am going insane trying to get this new HPLG web site to render correctly in Netscape 4+. It works fine in IE, and only uses very simple dhtml: If I only have one div it's fine -- but with two it stops working (they're supposed to be magically appearing tables when you mouseOver People and Research).

So, if you know even a tiny amount of dhtml please have a look and help me out! (I don't often beg like this, but hey.) You can have whatever's left of my eternal soul (once everyone else has had their share).